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Data Models into Database Designs

Data Models into Database Designs
Which is not true about surrogate keys?

They are short.
They have meaning to the user.
They are numeric.
They are fixed.

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Data Models into Database Designs
(STREET ADDRESS, CITY, STATE, ZIP) is an ideal primary key.

True
False

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Data Models into Database Designs
The identifier of an entity will become the ________ of the new table.

main attribute
primary key
identity key
foreign key

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Data Models into Database Designs
For every relationship, how many possible sets of minimum cardinalities are there?

Four
Six
Three
Two

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Data Models into Database Designs
A foreign key is:

All of these
used to define data types.
used to define null status.
a column containing the primary key of another table.

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Data Models into Database Designs
A primary key should be defined as:

NULL.
NOT NULL.
None of these
Either of the above can be used.

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